A temperature durability testing device for electronic products

Abstract

This invention discloses a temperature durability testing device for electronic products, aiming to solve the problems of reliance on manual periodic activation and dormancy operations, heavy manpower burden, and low testing accuracy in existing temperature durability testing. The device includes a temperature test chamber, a first power supply, a second power supply, a first control terminal, a second control terminal, a camera, and a load box. The first control terminal is connected to the temperature test chamber, the first power supply, the second power supply, the product, and the load box via communication links to achieve temperature monitoring, automatic power switching, and data acquisition. The second control terminal is connected to the first control terminal via Ethernet and, in conjunction with the camera, enables remote monitoring. This invention replaces manual operation with automated control, reducing manpower input and the risk of human error, improving testing accuracy and reliability, and is suitable for temperature durability testing scenarios of electronic products.

Description

Technical Field

[0001] This utility model relates to the field of automatic control equipment technology, specifically to a temperature durability testing device for electronic products. Background Technology

[0002] In electronic product reliability testing, temperature durability testing is a critical component. This test requires applying a constant temperature to the product for an extended period and periodically switching the product's operating mode: active mode (mode 3.2, where both the constant and active signals are applied at 14V, and the product operates normally) and sleep mode (mode 2.1, where the constant signal is applied at 12V, the active signal is not applied, and the product sleeps). Because the mode switching cycle is extremely short (activation time is typically a few minutes, and sleep time is even just a few seconds), current technology requires manual timed operation to switch modes and real-time monitoring of the test status and data in active mode, necessitating that test personnel be on-site at all times. This method not only increases the workload for personnel but also makes it difficult to accurately control the mode switching time, easily affecting test accuracy due to human error. It is particularly inconvenient to operate during off-peak hours such as late at night, severely restricting test efficiency and reliability.

[0003] In response to the problems mentioned above, we propose a temperature durability testing device for electronic products. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a reasonably designed, accurate, reliable and easy-to-use temperature durability testing device for electronic products, so as to solve the problems of frequent mode switching relying on manual labor, high labor costs and low testing accuracy.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A temperature durability testing device for electronic products, comprising:

[0007] Temperature test chambers are used to provide a constant temperature testing environment for products under test;

[0008] The first power supply has an output voltage of 14V and is used to power the product's constant power signal and activation signal.

[0009] The second power supply has an output voltage of 12V and is used to power the product's constant power signal.

[0010] The first control terminal is connected to the controller, the first power supply, and the second power supply of the temperature test chamber via a 232 communication link, and is used to monitor the working status of the temperature test chamber and control the periodic power-on and power-off of the first and second power supplies; the first control terminal is also connected to the product and the load box via a CAN communication link, and is used to monitor the test status of the product and save the test data.

[0011] The second control terminal is connected to the first control terminal via Ethernet and is used for remote synchronous monitoring of test data.

[0012] The camera is used to capture images of the test site and synchronize the images to the second control terminal to achieve remote on-site monitoring.

[0013] Preferably, both the first power supply and the second power supply are programmable power supplies with external serial ports, and the first control terminal performs programmatic control on them through a 232 communication link.

[0014] Preferably, the first control terminal is equipped with power program control software for presetting the power-on and power-off times of the first power supply and the second power supply in active mode (3.2 mode) and sleep mode (2.1 mode).

[0015] Preferably, the activation mode (mode 3.2) is when the first power supply is on and the second power supply is off, and both the constant power signal and the activation signal of the product are applied with a voltage of 14V; the sleep mode (mode 2.1) is when the second power supply is on and the first power supply is off, and the constant power signal of the product is applied with a voltage of 12V, and the activation signal has no voltage input.

[0016] Preferably, the first control terminal is equipped with a host computer monitoring system, which is used to display the product's test data, record fault information and report faults in real time during the testing process.

[0017] Preferably, the load cell is connected to the product to simulate the actual workload of the product, and the first control terminal obtains the working data of the load cell through the CAN communication link.

[0018] Preferably, the controller of the temperature test chamber feeds back the current temperature status to the first control terminal via a 232 communication link. When the preset temperature is reached, the first control terminal starts the power control program.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This invention achieves automatic switching between activation and sleep modes through the linkage of a first control terminal and a programmable power supply, eliminating the need for manual operation and significantly reducing manpower input.

[0021] This invention avoids the time error of manual timed switching, and ensures accurate mode switching time through programmed control, reducing the impact of human error on test results and improving test accuracy and reliability.

[0022] This invention utilizes a second control terminal and a camera, allowing testers to obtain test data and on-site images remotely without the need for constant on-site monitoring, thus solving the problem of personnel on-site monitoring during long-term testing.

[0023] The first control terminal of this invention saves test data and fault records in real time, and combined with camera recordings, provides a complete traceability basis for test result analysis.

[0024] This invention realizes fully automated control and remote monitoring of temperature durability testing, effectively solving the drawbacks of manual operation and significantly improving testing efficiency and reliability. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the connection of the testing system of this utility model. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1 As shown, a temperature durability testing device for electronic products includes a temperature test chamber, a first power supply, a second power supply, a first control terminal, a second control terminal, a camera, and a load box.

[0028] A temperature test chamber is used to place products under test and provides a preset constant temperature test environment. Its controller can provide feedback on the temperature status and perform temperature control.

[0029] The primary power supply has an output voltage of 14V and supplies power to the product's constant power signal and activation signal. It uses a programmable power supply with an external serial port and supports remote program control.

[0030] The second power supply has an output voltage of 12V and provides constant power for the product's signal. It also uses a programmable power supply with an external serial port to support remote program control.

[0031] The first control terminal, as the core control unit, is connected to the temperature test chamber controller, the first power supply, and the second power supply via a 232 communication link. It can identify the temperature status of the temperature test chamber (such as whether the preset temperature has been reached) and control the power-on and power-off switching of the first and second power supplies according to the preset program. At the same time, the first control terminal is connected to the product and the load box via a CAN communication link to collect and save the product's test data (such as working status parameters, fault information, etc.) in real time. It is equipped with a host computer monitoring system for data display, fault reporting, and recording.

[0032] The second control terminal is connected to the first control terminal via Ethernet and can remotely and synchronously acquire the test data of the first control terminal to achieve remote monitoring.

[0033] The camera, installed at the test site, is used to capture real-time images of the temperature test chamber, power supply, and products, and synchronize the video recording to the second control terminal to achieve remote visual monitoring of the test site.

[0034] The load cell is connected to the product under test to simulate the load environment when the product is actually working. Its working data is monitored by the first control terminal through the CAN communication link.

[0035] like Figure 1 The diagram shows the connection of the testing system of this utility model. Before testing, the product to be tested is placed in a temperature test chamber, and the product is connected to external equipment through a wiring harness: the constant power signal of the product is connected to the first power supply (14V) and the second power supply (12V) respectively, and the activation signal is only connected to the first power supply (14V); the product is connected to the load box to simulate the actual load.

[0036] The configuration steps before testing are as follows:

[0037] 1. Set the target temperature and duration of the temperature test chamber so that it remains constant after reaching the target temperature.

[0038] 2. Connect the first control terminal to the temperature test chamber controller, the first power supply, and the second power supply via a 232 communication cable. Open the power supply program control software and preset the switching cycle of the activation mode (mode 3.2) and the sleep mode (mode 2.1): for example, mode 3.2 lasts for 5 minutes (first power supply on, second power supply off), and mode 2.1 lasts for 30 seconds (second power supply on, first power supply off), and executes in a loop.

[0039] 3. The first control terminal connects the product and the load box's CAN interface via a CAN communication cable, opens the host computer monitoring system, and configures the data acquisition parameters (such as acquisition frequency and the type of parameters to be monitored).

[0040] 4. The second control terminal is connected to the first control terminal via Ethernet. The camera is installed at the test site, facing the temperature test chamber and power supply, and is connected to the second control terminal to ensure real-time image transmission.

[0041] After the experiment is started, the procedure is as follows:

[0042] 1. The temperature test chamber begins to heat up until it reaches the preset temperature, at which point its controller sends a "temperature met" signal to the first control terminal.

[0043] 2. After the first control terminal detects that the temperature meets the standard, it starts the power supply program:

[0044] Entering 3.2 mode: The first power supply is powered on and the second power supply is powered off. Both the product's constant power signal and activation signal are powered by 14V, entering normal working state. The first control terminal collects data from the product and load box in real time through CAN communication. The host computer displays and saves the data. If a fault occurs, it is immediately reported and recorded.

[0045] 3.2 After the mode time expires, it automatically switches to mode 2.1: the first power supply is powered off, the second power supply is powered on, the product's constant power signal receives 12V power, the activation signal has no voltage, and it enters sleep mode; the first control terminal continuously monitors the temperature status and waits for the next cycle to switch.

[0046] 3. The second control terminal synchronizes the test data of the first control terminal in real time via Ethernet, and observes the on-site status (such as the operating status of the temperature test chamber, power indicator lights, etc.) through a camera, realizing remote unattended monitoring.

[0047] 4. When the temperature test chamber reaches the preset duration, the controller stops working and sends a feedback signal. After receiving the signal, the first control terminal terminates the power control program and controls both the first and second power supplies to power off, thus ending the test.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A temperature durability testing device for electronic products, characterized in that, include: Temperature test chambers are used to provide a constant temperature testing environment for products under test; The first power supply has an output voltage of 14V and is used to power the product's constant power signal and activation signal. The second power supply has an output voltage of 12V and is used to power the product's constant power signal. The first control terminal is connected to the controller, the first power supply, and the second power supply of the temperature test chamber via a 232 communication link, and is used to monitor the working status of the temperature test chamber and control the periodic power-on and power-off of the first and second power supplies; the first control terminal is also connected to the product and the load box via a CAN communication link, and is used to monitor the test status of the product and save the test data. The second control terminal is connected to the first control terminal via Ethernet and is used for remote synchronous monitoring of test data. The camera is used to capture images of the test site and synchronize the images to the second control terminal to achieve remote on-site monitoring.

2. The apparatus according to claim 1, characterized in that, Both the first and second power supplies are programmable power supplies with external serial ports, and the first control terminal controls them programmatically via a 232 communication link.

3. The apparatus according to claim 1, characterized in that, The first control terminal is equipped with power program control software, which is used to preset the power-on and power-off times of the first power supply and the second power supply in active mode and sleep mode.

4. The apparatus according to claim 3, characterized in that, The activation mode is characterized by powering on the first power source and powering off the second power source, with both the product's constant power signal and activation signal receiving a 14V voltage. The sleep mode is characterized by powering on the second power source and powering off the first power source, with the product's constant power signal receiving a 12V voltage and the activation signal receiving no voltage input.

5. The apparatus according to claim 1, characterized in that, The first control terminal is equipped with a host computer monitoring system, which is used to display the product's test data, record fault information and report faults in real time during the testing process.

6. The apparatus according to claim 1, characterized in that, The load cell is connected to the product and is used to simulate the actual working load of the product. The first control terminal obtains the working data of the load cell through the CAN communication link.

7. The apparatus according to claim 1, characterized in that, The controller of the temperature test chamber feeds back the current temperature status to the first control terminal via a 232 communication link. When the preset temperature is reached, the first control terminal starts the power control program.

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